Summary:
The extra dereference in stmtexpr was wrong. When a dereference is needed, we have a cast.
This was causing one dereference too many, and creating wrong results.
Reviewed By: akotulski
Differential Revision: D3393294
fbshipit-source-id: 7a1ec8e
Summary:Local variable created by conditional operator translation is now declared in scope of whole
procedure. Semantically there is no difference, hopefuly backend will not complain about this
change. Also, nullifying that variable is deferred to preanalysis instead of calling it manually
Reviewed By: jvillard
Differential Revision: D3155733
fb-gh-sync-id: 6cec8fc
fbshipit-source-id: 6cec8fc
Summary:BinaryConditionalOperator should evaluate condition expression once, but we used to evaluate it twice.
Fix translation to account for it.
Reviewed By: dulmarod
Differential Revision: D3179803
fb-gh-sync-id: a801a7e
fbshipit-source-id: a801a7e
Summary:public
When a conditional is the last instruction, there will be a join node leading directly to the exit node.
Some instructions, such as nullification of dead variables, and abstraction, are added to the control flow graph automatically. But, join nodes cannot contain instructions. So when a procedure ends with a conditional, there might be no place to store these instructions.
This diff adds one extra node between the join and the exit node in that situation.
Reviewed By: jvillard
Differential Revision: D3179056
fb-gh-sync-id: 2b9cd7e
fbshipit-source-id: 2b9cd7e
Summary:public
Instead of using location of init_stmt, use location of variable when translating initialization.
Most of the time it change anything with some exceptions:
// example1 - C/C++/objC
int x = // now: assignment happens in this line
3; // past: assignment happens in this line
// example2: valid in C++11 only
struct X {
int x = 0; // now: one assignment here
int y = 2; // now: one assigmnent here
X() = default; // before: 2 assignments in this line
};
Reviewed By: dulmarod
Differential Revision: D3155870
fb-gh-sync-id: f38c78c
fbshipit-source-id: f38c78c
Summary:public
Add modeling of methods that can raise exceptions when parameters are
nil, and that return nil when passed nil.
Reviewed By: dulmarod
Differential Revision: D3101739
fb-gh-sync-id: 76af5a2
fbshipit-source-id: 76af5a2
Summary:public This also required a refactoring of InitListExpr.
The idea is that ImplicitValueInitExpr can stand for initialising a whole struct,
so we translating as a list of zero expressions, according to the struct's fields,
which is then paired with a list of field expressions, such that one get a list of
assignment instructions.
Reviewed By: ddino
Differential Revision: D2999875
fb-gh-sync-id: 7f609a0
shipit-source-id: 7f609a0
Summary:public
An observer object that registered to a notification center needs to be
unregistered before it is deallocated.
If not, the notification center may send a notification to a gost object.
This diff introduce a checker for this problem.
Reviewed By: dulmarod
Differential Revision: D2949692
fb-gh-sync-id: 1653cec
shipit-source-id: 1653cec
Summary:public
Improved/simplified framework for fronend checkers.
Now we have a unique hook from cTrans to run checkers on statements and a unique
hook from cFrontent to run checkers on declarations.
So now when adding a checker we don't have to modify cTrans/cFrontend.
Moreover made more sistematic the way checkers are invoked. This simplify the definition
of checkers and the way we use them.
Code is now simpler.
Reviewed By: jvillard
Differential Revision: D2976589
fb-gh-sync-id: fbe22d4
shipit-source-id: fbe22d4
Summary:public We model it as the builtin __instanceof which models the instanceof construct of Java.
The behaviour is the same.
Reviewed By: jvillard
Differential Revision: D2938969
fb-gh-sync-id: 2258de3
shipit-source-id: 2258de3
Summary:
public
Remove some of the explicit pattern matches in favor of using trans_state.var_exp for
init lists and compound literals
Reviewed By: jvillard
Differential Revision: D2855203
fb-gh-sync-id: ce929f6
Summary: public Did this by adding an option to rearrange that turns of error reporting.
Reviewed By: dulmarod
Differential Revision: D2768396
fb-gh-sync-id: 4898d2d
Summary:
public To deal with ObjC nullability and give meaningful error
messages, we introduced the ObjC_NULL attribute in the symbolic execution to
mean that the object carrying the attribute is null because it was the result
of a method call from a null object. However, one cannot add attributes to null,
so we had to delay nullifying the object in order to have the attribute until we
can assign it to a program variable. However, if the temp variable was used in a condition,
we were not taking into account that its meaning is null. This diff addresses that and fixes
many FPs that we have encounter.
Reviewed By: ddino
Differential Revision: D2765167
fb-gh-sync-id: c0878dd
Summary:
public
Lines other than the first of multi-line comments in non-ocaml files
were flush right instead of aligned.
Reviewed By: jvillard
Differential Revision: D2739752
fb-gh-sync-id: c85f56e
Summary:
public This continues the work on adding builtins for getters and setters
and removing the generated code from the frontend. This is extending it to setters and
removing the preanalysis that is no longer needed.
Reviewed By: akotulski
Differential Revision: D2734499
fb-gh-sync-id: 7cf5749
Summary:
public The ivar corresponding to the property is only available in the ast when the
implementation of the peroperty is available. Otherwise we add an ivar with the correct type
and the default name to the tenv and use it in the getter (and later in the setter).
This was not causing crashes because the generated code was swallowing the Missing_fld exception.
Now it flags it.
Reviewed By: akotulski
Differential Revision: D2734217
fb-gh-sync-id: 21c62af
Summary:
public
Use generic location visitor from facebook-clang-plugins
Therefore, there is no need to write our custom visitor which is hard to maintain
This introduces some level of magic, but makes it easier to maintain the code.
Reviewed By: jvillard
Differential Revision: D2734282
fb-gh-sync-id: ed9711a
Dulma Churchill
Sam Blackshear
Andrzej Kotulski
Dino Distefano
Cristiano Calcagno
Josh Berdine
Jules Villard